On 10/03/2011 23:42, David Lutterkort wrote:
Very odd. You could try running under valgrind, and see if it gives you
more information about how the SIGSEGV happened.
I don't think valgrind is an option on AIX - It is not listed on their
supported platforms and I can't find a ready-made package. I had a quick
go at compiling valgrind from source, but it told me "configure: error:
Valgrind is operating system specific. Sorry."
I also just pushed a patch that does better error checking from the
return values of the argz_* functions; but I doubt that that is the
issue.
Just tried a fresh clone from git this morning. Errors unchanged, but
the line numbers have changed, so I'm confident that I have your latest
patch. Here's the stack trace today.
Program received signal SIGSEGV, Segmentation fault.
0xd3582110 in argz_add () from
/home/temp/augeas.git/augeas/src/.libs/libaugeas.a(libaugeas.so.0)
(gdb) bt
#0 0xd3582110 in argz_add () from
/home/temp/augeas.git/augeas/src/.libs/libaugeas.a(libaugeas.so.0)
#1 0xd355d2b0 in aug_init (root=0xd3582a34 "/", loadpath=0x0, flags=0)
at augeas.c:385
#2 0x10002cec in main (argc=1, argv=0x2ff22c24) at augtool.c:1336
Is that the gnulib argz or a system-supplied argz ? You can check with
'nm gnulib/lib/.libs/libgnu.a | grep argz' - if that shows anything
you're using the gnulib argz (in which case it's strange we don't get a
line number for the SEGV)
It looks like we're using argz from gnulib. The output of nm gives me a
lot of line-noise, but within the random garbage I can see strings for
the argz stuff...
bash-3.2# nm gnulib/lib/.libs/libgnu.a 2>/dev/null | strings | grep argz
gnulib/lib/.libs/libgnu.a[argz.o]:
argz_extract00`000`000`000|
argz_extract00`000`000`000|
argz_extract00`000`000`000|
argz_extract00`000`000`000|
argz_extract00`000`000`000|
.argz_add T 2448 124
.argz_add_sep - 336
.argz_add_sep T 336 348
.argz_append - 2240
.argz_append T 2240 204
.argz_count T 176 148
.argz_create T 1584 284
.argz_create_sep T 1200 380
.argz_delete T 960 228
.argz_extract T 0 164
...
...
Cheers,
Jim
David
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